//
// DotNetNuke - http://www.dotnetnuke.com
// Copyright (c) 2002-2010
// by Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions 
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
//

using System;
using System.IO;
using System.Xml.Serialization;
using System.Xml.XPath;
using DotNetNuke.Common.Utilities;
using DotNetNuke.Services.Cache;
namespace DotNetNuke.HttpModules.Config
{
	[Serializable(), XmlRoot("RewriterConfig")]
	public class RewriterConfiguration
	{
		private RewriterRuleCollection _rules;
		public RewriterRuleCollection Rules {
			get { return _rules; }
			set { _rules= value; }
		}
		public static RewriterConfiguration GetConfig()
		{
			RewriterConfiguration Config = new RewriterConfiguration();
			Config.Rules = new RewriterRuleCollection();
			FileStream fileReader = null;
			string filePath = "";
			try {
				Config = (RewriterConfiguration)DataCache.GetCache("RewriterConfig");
				if ((Config == null)) {
					filePath = DotNetNuke.Common.Utilities.Config.GetPathToFile(ConfigFileType.SiteUrls);
					fileReader = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
					XPathDocument doc = new XPathDocument(fileReader);
					Config = new RewriterConfiguration();
					Config.Rules = new RewriterRuleCollection();
					foreach (XPathNavigator nav in doc.CreateNavigator().Select("RewriterConfig/Rules/RewriterRule")) {
						RewriterRule rule = new RewriterRule();
						rule.LookFor = nav.SelectSingleNode("LookFor").Value;
						rule.SendTo = nav.SelectSingleNode("SendTo").Value;
						Config.Rules.Add(rule);
					}
					if (File.Exists(filePath)) {
						DataCache.SetCache("RewriterConfig", Config, new DNNCacheDependency(filePath));
					}
				}
			} catch (Exception ex) {
				Services.Log.EventLog.EventLogController objEventLog = new Services.Log.EventLog.EventLogController();
				Services.Log.EventLog.LogInfo objEventLogInfo = new Services.Log.EventLog.LogInfo();
				objEventLogInfo.AddProperty("UrlRewriter.RewriterConfiguration", "GetConfig Failed");
				objEventLogInfo.AddProperty("FilePath", filePath);
				objEventLogInfo.AddProperty("ExceptionMessage", ex.Message);
				objEventLogInfo.LogTypeKey = Services.Log.EventLog.EventLogController.EventLogType.HOST_ALERT.ToString();
				objEventLog.AddLog(objEventLogInfo);
			} finally {
				if (fileReader != null) {
					fileReader.Close();
				}
			}
			return Config;
		}
		public static void SaveConfig(RewriterRuleCollection rules)
		{
			if (rules != null) {
				RewriterConfiguration config = new RewriterConfiguration();
				config.Rules = rules;
				XmlSerializer ser = new XmlSerializer(typeof(RewriterConfiguration));
				string filePath = Common.Globals.ApplicationMapPath + "\\SiteUrls.config";
				if (File.Exists(filePath)) {
					File.SetAttributes(filePath, FileAttributes.Normal);
				}
				FileStream fileWriter = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.Write);
				StreamWriter writer = new StreamWriter(fileWriter);
				ser.Serialize(writer, config);
				writer.Close();
				fileWriter.Close();
				DataCache.SetCache("RewriterConfig", config, new DNNCacheDependency(filePath));
			}
		}
	}
}
